A pilotless United States drone aircraft has crashed in the north-western Pakistani region of South Waziristan overnight, but it is not clear why it came down, Pakistani news channels report.
US forces have launched a string of attacks with missiles fired by drones and one ground assault on militant targets in north-western Pakistan in recent weeks, infuriating the US ally which says the attacks are a violation of Pakistani sovereignty.
The drone came down near the border village of Angor Adda, where US commandos launched a ground assault on September 3 that Pakistani officials say killed 20 people, including women and children.
A Pakistani intelligence official in the region says he has no information but he had heard claims from a Taliban faction a drone had been shot down on the Afghan side of the border.
Earlier on Tuesday (local time), US President George W Bush said visiting Pakistani President Asif Ali Zardari had spoken strongly about protecting Pakistani sovereignty.
But Mr Bush did not address the strikes.
"Your words have been very strong about Pakistan's sovereign right and sovereign duty to protect your country, and the United States wants to help," he said before meeting Mr Zardari in New York. (Bush-Cut the crap)
Pakistan's support is regarded as crucial to the success of Western forces trying to stabilise Afghanistan and in the fight against Al Qaeda.
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Hope this is not "green" journalism.